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Home > Cavity Wax

Cavity Coater

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Cavity Coater

Cavity Coater is the Perfect Solution for hard to reach areas that are prone to rusting! Cavity Coater is a single step, super-penetrating corrosion inhibiting coating (CIC) designed for long term protection on all metal surfaces. KBS Cavity Coater provides a self healing film which provides insane rust protection on hard to reach areas.

Aerosol w/36" Cavity Wand ... $34.95
Aerosol ... $24.95
Quart ... $34.95 | Gallon ... $99.95

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Part #: 75
NOTE: If you are looking for the Aerosol Can & Cavity Wand, please order from Amazon as we are currently waiting on our Aerosol Filler for more. We are sorry for any inconvenience.

Cavity Coater Overview

Cavity Coater - Cavity Wax

Cavity Coater is a one-step, super-penetrating corrosion inhibiting coating (CIC) for long term protection on all metal surfaces.

Cavity Coater provides a self healing film which renders over 4000+ hrs salt spray protection (meaning Insane Rust Protection) ...over 4 times the protection of conventional cavity waxes.

Use Cavity Coater with a KBS Cavity Wand to give long lasting protection for those hard to reach enclosed cavities such as rocker panels, boxed frames, inside doors & fenders, deck lids, tailgates...and more.

NOTE: You can also order a Cavity Wand separately to spray your Cavity Coater Aerosol.

Cavity Coater Features

  • 4000+ Hrs Salt Spray (Insane Rust Protection)
  • Creeps into Welds & Seams
  • Wicks & penetrates where primers and topcoats cannot
  • Water Displacing
  • Self Healing
  • Easy Application
  • Ultra Long Lasting
  • Multi-Surface Uses
  • Forms Capillary Action
  • Lubricating properties
  • Minimizes parts replacement costs
  • Enables faster dis-assembly when repairs are needed
  • Protects against carbon fusion
  • Resists alkaline solutions, most chemical & acid vapors, road salt, steam, salt water.

Cavity Coater Applications

Automotive: Boxed frames • Rocker panels • Inside doors • Inside car & trailer frame rails • Windshield cowls • trunk lids • Hoods • Inside A-Posts • Inside B-Posts • Inside front & rear fenders & Inside tailgates • Back sides of bumpers • Weld seams (Wicks into welds & seams) • Insulating between unlike metal surfaces • Use wherever a typical cavity wax would be used.

Anti-Seize/Anti-Corrosion: Nuts, bolts & screws • Shafts • Pipe Fittings • Gaskets • Press Fit Assemblies • Valve assemblies • Taps & drills • Pump mountings • Packing glands • Chain drives • Metal Fittings • Machinery

Cavity Coater Coverage

  • Cavity Coater Aerosol will coat 125 sq. ft. @ 1 mil thickness.
  • Quart of Cavity Coater will coat 200 sq. ft. @ 1 mil thickness.
  • Gallon of Cavity Coater will coat 800 sq. ft. @ 1 mil thickness.

Directions & Information Pages

Cavity Coater
Cavity Coater
on the KBS Support Forum
Cavity Coater FAQ's 

Cavity Coater - Instructional Video

Search The KBS Support Forum

WARNING: This product contains a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. www.P65Warnings.ca.gov

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Customer Reviews - Others Say It Best +See All Reviews
review 27 Total Reviews Sorting:
Rating Better than other similar products
Similar type of product to FluidFilm, Amsoil MP HD or KanoKroil WeatherPruf. Its sort of a mix between wax and a little grease. This product seems more durable and its thinner so it creeps and penetrates better than the others in my experience. Expect to have to reapply after a while if you're using it as an undercoat or in an area directly blasted by water and road grime, it's best suited as protection for areas that are hard to get to like behind body panels and seams
  Did you find this helpful?    7 of 7 Found Helpful
Reviewed by:  from MN. - 7/17/2016
Rating this is amazing!!! definatley use this item. goes on easy!!!
Sprayed it in my doors base channel. The tube with the special 360 tip worked perfectly!!!
  Did you find this helpful?    4 of 4 Found Helpful
Reviewed by:  from Pittsburgh Pennsylvania. - 7/28/2016
Rating 4000 hours protection
The product is supposed to keep more than 4000 hours. But 4000 hours is 166 days, so half a year. I thinks that's very poor guarantee for rust protection. Or do I miss something ?
  Did you find this helpful?    3 of 9 Found Helpful
Reviewed by:  from Amsterdam. - 1/22/2014
Rating works great
stuff flows every where
  Did you find this helpful?    2 of 2 Found Helpful
Reviewed by:  from elgin il.. - 1/21/2017
Rating great for hidden areas
Easy to get into tight areas and seal
  Did you find this helpful?    2 of 2 Found Helpful
Reviewed by:  from pace,fl. - 4/24/2013
Rating Works great!
Make sure and grab the Wand too...makes getting into areas otherwise impossible to get to. Shake the can very well before using. If you do get the Wand get the Cavity Coater Cleaner to clean the wand out right after using!
  Did you find this helpful?    2 of 2 Found Helpful
Reviewed by:  from IOWA. - 10/29/2015
Rating Inside Frame - Worked Great!
I used this to coat the inside of my frame after I painted the outside of the frame with RustSeal. Very easy to use. Seems to have coated the entire inside. I like the peace of mind that comes from having both the inside & outside of the frame coated to prevent cancer.
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from Monroe, LA. - 9/4/2012
Rating Coats The Inside
I used the aerosl can to coat the inside of my frame. The Cavity Coater was easy to spray with the wand. Could see it coming out of the holes in my frame so I was confident that the entire inside was sealed up. Great product!
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from Palos Heights, IL. - 3/10/2014
Rating good product bad container
the wax itself is great, looks like it may be kroil based or similar, so it works it's way into tight places very well, the can valve breaks well before the can is empty
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from il. - 6/24/2013
Rating Good wax based coater
Good product. One of the best coater out there. Better than Zebart. Would not use it to coat a frame. Better for places that don't have any access like door panels and rocker panels. Gets into the cracks well. Use only if it is very warm out, does not like cool or cold temps. Gets too thick, Better if it is hot and runny so it leaves a very thin coat. Don't pile it on, thin is better. Misting it on is all that is needed. Does what it says it does, lasts forever.
  Did you find this helpful?    1 of 1 Found Helpful
Reviewed by:  from Philadelphia, PA. - 12/26/2014
Review Cavity Coater
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